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Old 02-13-2013, 09:08 PM   #1 (permalink)
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Wtb:99-00 civic hx cvt harness

I have a project I would like to complete and I need this harness to get it done. If you guys find someone parting out a civic hx, has to be 99-00, please let me know. I really would like to follow through on my d15b 3 stage vtec.

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Old 02-13-2013, 10:20 PM   #2 (permalink)
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Rusty crusty trusty - '94 Honda Civic Cx
90 day: 36.13 mpg (US)

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Your doing a 3 stage with an auto?
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Old 02-14-2013, 12:49 AM   #3 (permalink)
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I will but for now I will be running the the d16y5.
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Old 02-24-2013, 11:54 AM   #4 (permalink)
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you can use a stock d16y8 engine harness. tie the vtec oil pressure switch into the 16v vtec wire and just run wires from the ecu to the 2nd vtec, egr valve, egr control solenoid and econo light. i have the ecu pin outs to do that if your interested!! let me know...
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Old 02-24-2013, 01:25 PM   #5 (permalink)
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Quote:
Originally Posted by scottied15 View Post
you can use a stock d16y8 engine harness. tie the vtec oil pressure switch into the 16v vtec wire and just run wires from the ecu to the 2nd vtec, egr valve, egr control solenoid and econo light. i have the ecu pin outs to do that if your interested!! let me know...

I have wiring diagram except for the econo light. Whats the pinout location for obd2b and how do I wire it? Does it output a negative or a positive signal from the ecu pin?
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Old 02-24-2013, 01:37 PM   #6 (permalink)
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Quote:
Originally Posted by tony_2018 View Post
I have wiring diagram except for the econo light. Whats the pinout location for obd2b and how do I wire it? Does it output a negative or a positive signal from the ecu pin?
it's pin a30 for obd2a. pretty sure the ecu gives the light a ground!! this is how i did it.. I wired the econo light to my cruise control light.

- The green plug on the rear of the gauge cluster is for the cruise control.

- The yellowish tan wire on the green plug is constant power.Wire it to the battery or tap it into a 12v source.

- Then wire the red blue wire on the green plug to A30 on the ecu. This is the ecu triggered ground.
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Old 02-24-2013, 06:53 PM   #7 (permalink)
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Well that doesn't help me much, you did read that I needed the 99-00 engine harness right?
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Old 02-24-2013, 07:03 PM   #8 (permalink)
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Quote:
Originally Posted by tony_2018 View Post
Well that doesn't help me much, you did read that I needed the 99-00 engine harness right?
yea..... good luck finding a pinout for obd2b!! i had to buy a obd2a ecu and buy a jumper harness to make it work on a 99-00 harness.. a p2j-j11 is 10 times harder to find then the p2j-003 i have...
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Old 02-24-2013, 09:50 PM   #9 (permalink)
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Quote:
Originally Posted by scottied15 View Post
yea..... good luck finding a pinout for obd2b!! i had to buy a obd2a ecu and buy a jumper harness to make it work on a 99-00 harness.. a p2j-j11 is 10 times harder to find then the p2j-003 i have...
Funny you say that because I actually have one, but I also have the d15b obd2b cvt ecu as well. Thats why I need that 99-00 hx cvt harness to make this work. Either way its a project mpg car, always ongoing. I'm not satisfied with the gas mileage I'm getting with the automatic 4speed. I'm not capable of lowering my revs while on the highway. I'm actually in the process of rebuilding a cvt and using the fully synthetic fluid for cvt from nippon Eneos.
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Old 09-05-2013, 12:05 PM   #10 (permalink)
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an old thread I know, but I figured I'd reply to clear up a few things. The 99-00 civic HX is the ONLY platform that used an OBD2a harness. So the obd2b ecu of any kind will not mate on to that car. A complete obd2b harness from an ex would be the closest match.

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